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  <script>
    // 计算[2, 6, 18, 15, 40] 中能被3整除的偶数的和
    let arr = [2, 6, 18, 15, 40]
       let sum =0
       for(let i=0;i<arr.length;i++){
        if(arr[i]%3===0 && arr[i] % 2 === 0){
                 sum +=arr[i]
        }
       }
          console.log(sum);

  </script>
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